John pbentice



(No Model.)

J. PRENTIGE.

000K FOR GAS FIXTURES.

N0. 385,134. Patented June 26, 1888.

WWW.

hur. wumngton, D. o.

UNITED STATES PATENT OFFI E.

JOHN PRENTIOE, OF NEW YORK, N. Y.

COCK FOR GAS-FIXTURES.

SPECIFICATION forming part of Letters Patent No. 385,134, dated June 26, 188B.

.- Application filed February 14, 1887. Serial No. 227,621. (No model.)

To aZZ whom, it may concern:

Be it known that I, JOHN PRENTIOE, of the city and State of New York, have invented an Improvement in Cocks for; Gas-Fixtures, of whiohthe following is a specification.

The cocks upon gas-fixtures usually have a stop-pin that limits the rotation of the plug, so that the plug will be stopped when the gas is turned off; but inexperienced persons sometimes turn the cock back again sufficient] y to allow the gas to escape, and thereby life is sometimes endangered.

In some instances the stop pin has been moved in one direction byaspringto hold the plug and withdrawn by hand, and a spring stop has been applied on the handle of the plug.

My invention relates to the combination, with the barrel and tapering plug in a gas cock, of a spring-latch upon the barrel that is moved by the stop-pin of the plug and springs in behind the same, so that the plug cannot be turned back after the gas has been shut off until the latch has been moved to separate it from the stp-pin of the plug, thereby rendering the gas-cock less liable to be left open by inexperienced persons.

In the drawings, Figure l is an elevation of the gas-cock and its spring-latch. Fig. 2 is an inverted sectional plan view of the cock at the line 00 ac, Fig. 8; and Fig. 3 is a sectional elevation at the line y y, Fig. 1.

a quarter of a revolution, so that in one position the gas is turned on and in the other it is shut ofl.

There is a spring'latcli, F, pivoted to the barrel, and its inclined end 5 is adjacentto the pin 2, so that when the plug is turned to shut oh the gas the stoppin 2 presses back the latch, and then the latch springs back and holds the stop pin and the plug from being moved until the latch is liberated by pressing on its projecting end.

, The pivot of the springlatch preferably passes through jaws 6 on the plate 7, that is at tached by screws 9 to the barrel of the cook; but with new cooks the pivot-jaws will be cast upon the barrels. The spring 10 for the latch 4 is between the barrel and the back of the latch.

I do not claim a gas-cock with a spring to turn the same oh and a latch to hold the cock when open. In this case the spring holds the gas-cock closed, while in my improvement the gas cock is turned on or off by hand and the springlatch holds the plug of the cock when the gas is turned out.

I claim as my invention- The combination, with the barrel and plug and the stops to limit the motion in turning the plug, of a latch pivoted upon the barrel and its end holding a stop on the plug of the cock when the gas is turned off, substantially as set forth.

Signed by me this 10th day of February, 1887.

JOHN PRENTICE.

Witnesses:

GEO. T. PINCKNEY, WILLIAM G. MoTT. 

